Water-soluble molecules such as glucose and amino acids move across the blood-brain barrier by
A. diffusion.
B. endocytosis.
C. exocytosis.
D. mediated transport.
E. filtration.
D
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Caffeine and related stimulants exert their effects by
A) inhibiting a specific neuromodulator. B) inhibiting a specific neurotransmitter. C) mimicking a specific neuromodulator. D) mimicking a specific neurotransmitter.
In the blood is
a. the pressure exerted by the amount of oxygen dissolved in the blood b. the most important factor determining the percent saturation of hemoglobin c. normal in carbon monoxide poisoning d. only a and b e. a, b, and c
The four main types of tissue in the body are:
What will be an ideal response?
Nutrition includes the study of
A. how nutrients play a role in your body's health. B. the nutrients in foods. C. digestion, absorption, and transportation of nutrients. D. the body's utilization of nutrients. E. All of these choices are correct.